Fix TexImage2D clearing too agressively

Fix TexImage2D clearing too agressively

TEST=unit tests and WebGL conformance test
BUG=112668
R=apatrick@chromium.org


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=120721

[greggman, 2012-02-04 02:34:20]

Hey Al, Please review. Thx

I love it. A 1 line change requires over 100 lines of testing :-p

[apatrick_chromium, 2012-02-06 18:15:03]

lgtm

[commit-bot: I haz the power, 2012-02-06 18:15:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gman@chromium.org/9307102/1

[commit-bot: I haz the power, 2012-02-06 20:18:59]

Try job failure for 9307102-1 (retry) on mac_rel for step "browser_tests".
It's a second try, previously, step "browser_tests" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac_rel&nu...

[commit-bot: I haz the power, 2012-02-06 20:50:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gman@chromium.org/9307102/1

[commit-bot: I haz the power, 2012-02-06 23:28:32]

Try job failure for 9307102-1 (retry) on mac_rel for step "browser_tests".
It's a second try, previously, step "browser_tests" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac_rel&nu...

[commit-bot: I haz the power, 2012-02-06 23:46:17]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gman@chromium.org/9307102/1

[commit-bot: I haz the power, 2012-02-07 04:57:16]

Change committed as 120721